linux-kernel - Re: [PATCH 1/4] vdpa: introduce config op to get valid iova range

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Message-ID: <777d6e78-4271-10e9-4546-329f53962429@redhat.com>
Date:   Thu, 6 Aug 2020 11:25:11 +0800
From:   Jason Wang <jasowang@...hat.com>
To:     "Michael S. Tsirkin" <mst@...hat.com>
Cc:     virtualization@...ts.linux-foundation.org,
        linux-kernel@...r.kernel.org, rob.miller@...adcom.com,
        lingshan.zhu@...el.com, eperezma@...hat.com, lulu@...hat.com,
        shahafs@...lanox.com, hanand@...inx.com, mhabets@...arflare.com,
        gdawar@...inx.com, saugatm@...inx.com, vmireyno@...vell.com,
        zhangweining@...jie.com.cn, eli@...lanox.com
Subject: Re: [PATCH 1/4] vdpa: introduce config op to get valid iova range


On 2020/8/5 下午8:51, Michael S. Tsirkin wrote:
> On Wed, Jun 17, 2020 at 11:29:44AM +0800, Jason Wang wrote:
>> This patch introduce a config op to get valid iova range from the vDPA
>> device.
>>
>> Signed-off-by: Jason Wang<jasowang@...hat.com>
>> ---
>>   include/linux/vdpa.h | 14 ++++++++++++++
>>   1 file changed, 14 insertions(+)
>>
>> diff --git a/include/linux/vdpa.h b/include/linux/vdpa.h
>> index 239db794357c..b7633ed2500c 100644
>> --- a/include/linux/vdpa.h
>> +++ b/include/linux/vdpa.h
>> @@ -41,6 +41,16 @@ struct vdpa_device {
>>   	unsigned int index;
>>   };
>>   
>> +/**
>> + * vDPA IOVA range - the IOVA range support by the device
>> + * @start: start of the IOVA range
>> + * @end: end of the IOVA range
>> + */
>> +struct vdpa_iova_range {
>> +	u64 start;
>> +	u64 end;
>> +};
>> +
> This is ambiguous. Is end in the range or just behind it?


In the range.


> How about first/last?


Sure.

Thanks


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